82880680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:670

約数の個数: 64

約数和(自身を含む): 193369680

約数和(自身を除く): 110489000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 97, 164, 194, 205, 328, 388, 410, 485, 521, 776, 820, 970, 1042, 1640, 1940, 2084, 2605, 3880, 3977, 4168, 5210, 7954, 10420, 15908, 19885, 20840, 21361, 31816, 39770, 42722, 50537, 79540, 85444, 101074, 106805, 159080, 170888, 202148, 213610, 252685, 404296, 427220, 505370, 854440, 1010740, 2021480, 2072017, 4144034, 8288068, 10360085, 16576136, 20720170, 41440340, 82880680]

約数ペア:

[(1, 82880680), (2, 41440340), (4, 20720170), (5, 16576136), (8, 10360085), (10, 8288068), (20, 4144034), (40, 2072017), (41, 2021480), (82, 1010740), (97, 854440), (164, 505370), (194, 427220), (205, 404296), (328, 252685), (388, 213610), (410, 202148), (485, 170888), (521, 159080), (776, 106805), (820, 101074), (970, 85444), (1042, 79540), (1640, 50537), (1940, 42722), (2084, 39770), (2605, 31816), (3880, 21361), (3977, 20840), (4168, 19885), (5210, 15908), (7954, 10420)]